package com.hrs.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.hrs.pojo.User;

public class LoginInterceptor implements HandlerInterceptor {

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object obj) throws Exception {
		StringBuffer url = request.getRequestURL();
		if (url.indexOf("/login") >= 0)
			return true;
		HttpSession session = request.getSession();
		User user = (User) session.getAttribute("USER_SESSION");
		if (user != null)
			return true;
		request.setAttribute("errMsg", "你还没有登录，请先登录！");
		request.getRequestDispatcher("/login.do").forward(request, response);
		return false;
	}

}
